Electric heating – Microwave heating – Radiation protection
Reexamination Certificate
2006-09-19
2010-12-21
Van, Quang T (Department: 3742)
Electric heating
Microwave heating
Radiation protection
C219S756000, C219S763000, C126S02100R
Reexamination Certificate
active
07855352
ABSTRACT:
A radiation inspection system includes a shielding door device for a radiation inspection system, comprising a door body, two guides located on two opposite sides of the door body, a rack, a gear and a motor. The two guides are fixed on an upper surface of a frame and the door body is movably connected to the two guides via bearings. The rack is fixed on a bottom of the door body and meshed with the gear. The gear is coupled with a shaft of the motor fixed on a lower surface of the frame. This configuration is advantageous in automatic and complete shielding of the radiation inspection system without interference. In addition the shielding door can be controlled intelligently, so that accidental radiation leakage can be prevented.
REFERENCES:
patent: 4450335 (1984-05-01), Shimizu et al.
patent: 5416330 (1995-05-01), Abul-Faraj et al.
patent: 6166353 (2000-12-01), Senneville et al.
patent: 7244916 (2007-07-01), Iwamoto
patent: 3236290 (1984-04-01), None
Chen Zhi-qiang
Hu Haifeng
Li Yuanjing
Li Yulan
Liu Yinong
Nuctech Company Limited
Tsinghua University
Van Quang T
Westman Champlin & Kelly P.A.
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